The drum-shaped gear coupling is to make the external teeth into a spherical surface, the center of the spherical surface is on the gear axis, and the gap on the ulnar side is larger than that of the ordinary gear. The drum-shaped gear coupling can allow a larger angular displacement (relative to the straight gear coupling), which can improve the contact conditions of the teeth, increase the torque capacity, and extend the service life.
TGL type drum-shaped gear coupling with nylon inner ring gear is suitable for the nominal torque below 2500N·m. It is connected to two coaxial line shaft transmissions and has the performance of compensating the relative deviation of the two shafts.